化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2015年
1期
149-156
,共8页
李卜义%王建友%王济虎%刘红斌
李蔔義%王建友%王濟虎%劉紅斌
리복의%왕건우%왕제호%류홍빈
中空纤维膜组件%空气隙式膜蒸馏%蒸馏%脱盐%设计
中空纖維膜組件%空氣隙式膜蒸餾%蒸餾%脫鹽%設計
중공섬유막조건%공기극식막증류%증류%탈염%설계
hollow fiber membrane module%air gap membrane distillation%distillation%desalination%design
利用自制的添加隔热管状隔网并呈螺旋缠绕结构编排的中空纤维膜组件进行了空气隙式膜蒸馏（AGMD）海水淡化过程性能研究，实验以模拟标准海水（质量分数3.5%，总溶解性固体含量35000 mg·L?1）为热料液进水，考察了热料液进水温度、热料液流量、冷凝液进水温度和冷凝液流量对膜通量、造水比和热效率的影响。结果表明，随着热料液进水温度增加，膜通量、造水比和热效率均增加；冷凝液进水温度增加，膜通量下降而造水比和热效率增加；热料液流量增加，膜通量上升而造水比和热效率明显下降；冷凝液进水流量对膜蒸馏过程性能影响较小。实验过程中产水TDS始终保持在3.0 mg·L?1以下，相应的离子去除率高于99.99%，膜通量、造水比和热效率最高可分别达5.87 L·m?2·h?1、5.37和0.943。研究表明，引入清洁能源取代传统电加热驱动热源将进一步突出膜蒸馏技术的实际应用潜力。
利用自製的添加隔熱管狀隔網併呈螺鏇纏繞結構編排的中空纖維膜組件進行瞭空氣隙式膜蒸餾（AGMD）海水淡化過程性能研究，實驗以模擬標準海水（質量分數3.5%，總溶解性固體含量35000 mg·L?1）為熱料液進水，攷察瞭熱料液進水溫度、熱料液流量、冷凝液進水溫度和冷凝液流量對膜通量、造水比和熱效率的影響。結果錶明，隨著熱料液進水溫度增加，膜通量、造水比和熱效率均增加；冷凝液進水溫度增加，膜通量下降而造水比和熱效率增加；熱料液流量增加，膜通量上升而造水比和熱效率明顯下降；冷凝液進水流量對膜蒸餾過程性能影響較小。實驗過程中產水TDS始終保持在3.0 mg·L?1以下，相應的離子去除率高于99.99%，膜通量、造水比和熱效率最高可分彆達5.87 L·m?2·h?1、5.37和0.943。研究錶明，引入清潔能源取代傳統電加熱驅動熱源將進一步突齣膜蒸餾技術的實際應用潛力。
이용자제적첨가격열관상격망병정라선전요결구편배적중공섬유막조건진행료공기극식막증류（AGMD）해수담화과정성능연구，실험이모의표준해수（질량분수3.5%，총용해성고체함량35000 mg·L?1）위열료액진수，고찰료열료액진수온도、열료액류량、냉응액진수온도화냉응액류량대막통량、조수비화열효솔적영향。결과표명，수착열료액진수온도증가，막통량、조수비화열효솔균증가；냉응액진수온도증가，막통량하강이조수비화열효솔증가；열료액류량증가，막통량상승이조수비화열효솔명현하강；냉응액진수류량대막증류과정성능영향교소。실험과정중산수TDS시종보지재3.0 mg·L?1이하，상응적리자거제솔고우99.99%，막통량、조수비화열효솔최고가분별체5.87 L·m?2·h?1、5.37화0.943。연구표명，인입청길능원취대전통전가열구동열원장진일보돌출막증류기술적실제응용잠력。
A new spiral-wound air-gap membrane distillation (AGMD) module based on hollow fiber (SW-AGMD-HF) involved with the adiabatic tubular net was developed for seawater desalination. Permeate flux (JW), gained output ratio (GOR) and thermal efficiency (η) were introduced to indicate process performance. The effects of hot feed-in temperature, hot feed-in flow rate, cold feed-in temperature and cold feed-in flow rate on the above three indicators were studied with 3.5% (mass) modeled seawater as feed solution. JW, GOR and ηincreased as a higher hot feed temperature was used. JW decreased with increasing cold feed temperature, while GOR andηpresented an opposite tendency. A larger hot feed flow rate would only increase JW. Cold feed flow rate showed a slight influence on desalination process performance. During the experiments, total dissolved solid of permeate was kept blow 3.0 mg·L?1 all the time, and relative ion rejection rate was above 99.99%. The maximum permeate flux of 5.87 L·m?2·h?1, maximum gained output ratio of 5.37 and maximum thermal efficiency of 0.943 were also obtained. Consequently, the introduction of clean energy as an alternative of conventional electric heat source could further raise the actual application potentiality of membrane distillation process.
